@media (max-width: 639px) {
  .table-wrap {
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
  }

  .table-wrap table {
    width: 920px;
    min-width: 920px;
  }

  .table-wrap th:first-child,
  .table-wrap td:first-child {
    position: static;
  }
}